Dremel Devil

It’s a plastic fan inside a cylinder, and it’s meant to be launched off a Dremel rotary tool. If done right, you’ll see this little toy soar up to 200 feet up in the air. The file is free on the Thingiverse."The Dremel Devil is a 3D-printed fan that you launch from your high-speed rotary tool to soar up to 200 feet."